After the fight between Tina Greer and Jeff Palmer at Belle Reve Sanitarium, Jeff disappeared. Some say that Jeff died that day. Others say that Jeff works in secret, aiding the Justice League. Some others say that Jeff Palmer was driven to the brink of madness that day by Tina, and spends his nights plotting his ultimate revenge against the Legion of Doom.
A couple of years after Jeff's disappearance a new metahuman group emerged, known by several names including 'Earth First' and 'The Avant Guard'. They were a xenophobic group that opposed the interference of alien beings in what they considered to be "Earth matters", and were lead by a mysterious and powerful being known as the Emerald Empress. 'Earth First' quickly drew former members of several groups including the Hand of Vengeance, and became very powerful.
One of their members known as 'The Phantom' was said to have the power to make himself invisible, an ability that was once shared by Jeff Palmer. He was also said to be a fierce critic of Tina Greer and the Legion of Doom.
(Actors from left to right: Fraser Aitcheson as 'The Persuader', Katie Holmes as the Emerald Empress, Alexz Johnson as "Lady Saturnine")